电子邮件发送代码在Ubuntu

不工作，我需要通过我的网络应用程序发送电子邮件到一些Gmail帐户。我已经在Windows机器上编写和测试过代码，它运行良好。它从Windows（Apache Tomcat）发送电子邮件。但在Ubuntu上托管的Apache Tomcat版本中无法发送电子邮件。电子邮件发送代码在Ubuntu

我所到目前为止已经试过是：

试过两个端口465和587
试图用命令sudo来添加端口UFW允许465

但我仍然有相同的错误。

以下是错误的堆栈跟踪

javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465; 
    nested exception is: 
    java.net.ConnectException: Connection timed out 
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1227) 
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:322) 
    at javax.mail.Service.connect(Service.java:236) 
    at in.cdac.feedback.controller.FeedbackController.sendEmailTest3(FeedbackController.java:81) 
    at in.cdac.feedback.controller.FeedbackController.sendFeedbackMail(FeedbackController.java:34) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Thread.java:745)

来源

2016-08-17 Anuja

貌似服务器不可用。可能被防火墙阻止？ – Jens

多数民众赞成我想和防火墙添加端口，但......没有用 – Anuja

你可以telnet到它的程序之外？如果不是，那就是网络。如果是的话，那可能是身份验证问题。 –

在我的情况的问题是使用代理。为帮助检查连接问题，请通过评论中的链接。

来源

2016-08-17 11:11:02 Anuja

电子邮件发送代码在Ubuntu

回答

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